#include <stdio.h>
#include <string.h>
 
int main ()
{
   char src[50], dest[50];
 
   strcpy(src,  "This is chinese");
   strcpy(dest, "This is US");
 
   strcat(dest, " ");
   strcat(dest, src);
   printf(" dest size is %ld \n",strlen(dest));
   
 
   printf("最终的目标字符串： |%s|", dest);
   
   return(0);
}